Crosslist from Bidzzy to Whatnot — Automatically

Why Sell on Both Bidzzy and Whatnot?

Bidzzy and Whatnot sit at opposite ends of how online resale actually happens, which is exactly what makes the pair useful: one is a quiet, browse-and-buy fixed-price app, the other is a loud, entertainment-driven live show — and your inventory can be on both without you doing any extra work per item.

Bidzzy is small and new. BIDZZY LTD was incorporated on 3 June 2026, and the marketplace carried around 70,900 live listings and 19,200 public profiles when last measured on 15 August 2026. Every seller pays nothing — no listing fee, no commission — because Bidzzy’s own terms state plainly that fees are funded entirely by the buyer’s Buyer Protection charge (5% of item price + £0.80, capped at £15). It covers fashion, homeware, kids’ items, books, tech accessories and collectibles across the UK, and — despite what the name suggests — there is no bidding anywhere on the platform. Every item is a fixed price with buyer offers layered on top.

Whatnot is the opposite kind of big. The company reported more than $8 billion in GMV for 2025, doubling its 2024 figure, off the back of a live-video format where a seller runs back-to-back auctions on camera and buyers bid in real time. But live shows are only half of Whatnot: every item you list also exists as a standalone listing card with its own price, and if you’re not running a show that card simply sits on Whatnot’s Marketplace tab as a normal Buy It Now listing that buyers can find through search — no camera, no stream, no auction required.

That second mode is the one this pair page is actually about. FLUF Connect crosslists your Bidzzy items onto Whatnot as fixed-price Buy It Now listings, not as auctions — there’s no live show to attach them to unless you go and run one yourself. So the honest pitch is narrower than “get into live selling”: it’s “put your already-priced Bidzzy stock in front of Whatnot’s browsing buyers too, for free, with the same price you already set.” If you later decide to run shows, those same items are sitting in your Whatnot inventory ready to pull into one.

The category overlap is real but not total. Bidzzy’s live catalogue leans fashion and general household goods; Whatnot’s marketplace-and-live-show audience over-indexes on trading cards, collectibles and electronics, categories Bidzzy also carries. If part of your Bidzzy stock is Funko Pops, trading cards, sealed collectibles or small tech accessories, Whatnot’s buyers are demonstrably already primed for that stock — 6.4 million sports cards sell on Whatnot every month. Plain fashion and homeware will do fine as Marketplace listings, just without that category tailwind.

How to Crosslist from Bidzzy to Whatnot with FLUF Connect

The mechanics differ from most FLUF pairs because Bidzzy and Whatnot use two completely different connection methods, and it’s worth understanding why before you start.

1. Sign up or log in to FLUF Connect.
2. Connect your Bidzzy account — type in the email and password you use on Bidzzy. Bidzzy is a Supabase app (GoTrue auth, PostgREST, Supabase Storage) with no anti-bot layer anywhere in its client, so FLUF talks to it directly from the server. Your password is used once, in memory, to get a session token, then discarded — only a refresh token is stored, the same way an OAuth connection behaves.
3. Connect your Whatnot account — this one is different. Whatnot runs Kasada bot protection that returns a 401 on server-only requests, so FLUF can’t just call Whatnot’s API directly the way it does with Bidzzy. Instead, the FLUF Chrome extension captures your logged-in Whatnot session from your own browser and runs the GraphQL calls from there. You need to be logged into whatnot.com in Chrome with the extension installed for pushes to go through.
4. Import your Bidzzy listings into the FLUF dashboard — bulk import or pick individual items.
5. Review the field mapping — title, description, price, photos, category and condition are pre-mapped; anything Whatnot needs that Bidzzy doesn’t have (like a category-specific attribute) gets flagged for you to fill in once.
6. Select products and click “Crosslist to Whatnot.”
7. Your listing appears on Whatnot’s Marketplace tab, usually within a few minutes of the extension picking up the job — the extension needs to be open in an active browser session, so pushes queue until it’s next running rather than firing instantly like a pure server-side channel.

Behind the scenes: FLUF reads your Bidzzy listing, resolves the closest Whatnot category (which in turn determines which attribute fields and shipping profile Whatnot expects), converts your price into whatever currency your Whatnot seller account is set to, and hands the whole payload to the extension to publish as a Buy It Now listing. You can also set auto-crosslist rules so new Bidzzy inventory — filtered by category, price or brand — pushes to Whatnot automatically as you add it, and crosslist hundreds of items in one bulk action rather than one at a time.

What Transfers When You Crosslist from Bidzzy to Whatnot?

This is the field-by-field detail that decides whether a crosslisted listing looks native on Whatnot or looks obviously imported. Verified against both channels’ code in FLUF Connect, not guessed.

Field Mapping — Bidzzy to Whatnot

Legend: ✅ Automatic — transfers with no action needed. ⚡ Smart mapped — FLUF converts between different formats. ⚠️ Needs a check — FLUF sets a default; verify it. ❌ Not available — no equivalent on the other side.

Category Mapping Examples

Inventory Sync Between Bidzzy and Whatnot — What Stays in Sync?

This is the one place where this pair is genuinely asymmetric, and it’s worth being precise about it rather than promising a two-way sync that doesn’t exist yet.

This is exactly the kind of limitation FLUF Connect would rather state plainly than gloss over. If you’re crosslisting fast-moving, single-unit stock (a specific size, a graded card, a sealed set), keep an eye on your Bidzzy sales for now and mark the Whatnot listing sold yourself the moment one lands, until the reverse sync ships.

Crosslisting from Bidzzy to Whatnot: Before and After FLUF Connect

Without FLUF Connect (Manual Crosslisting)

1. Open your Bidzzy listing, note the title, price and condition
2. Download or screenshot each photo
3. Open Whatnot, start a new listing
4. Paste and shorten the title to fit Whatnot’s card
5. Rewrite the description (Bidzzy’s formatting doesn’t carry over by copy-paste)
6. Upload each photo one by one
7. Find the right Whatnot category, which is structured completely differently from Bidzzy’s
8. Re-select condition against Whatnot’s category-specific attribute list
9. Convert the price if your Whatnot account runs in a different currency
10. Choose a shipping profile
11. Publish
12. Write down, somewhere, that this item is now listed on both platforms
13. When it sells on either one — manually go to the other and pull the listing before someone else buys the same item

Time per item: roughly 8–12 minutes, plus the ongoing manual double-selling risk that never goes away.

With FLUF Connect

1. Select Bidzzy products in the FLUF Connect dashboard
2. Click “Crosslist to Whatnot”
3. Review the pre-mapped fields
4. Confirm
5. Done — the extension publishes it as a Whatnot Buy It Now listing, and Whatnot-side sales withdraw the Bidzzy listing automatically

Automation for Bidzzy and Whatnot Sellers

Being direct about this pair: neither Bidzzy nor Whatnot supports FLUF’s automated relisting or FLUF-managed offer sending today. Bidzzy exposes bulk mark-as-sold and nothing else on the automation side yet; Whatnot exposes order sync and mark-as-sold. Here’s what that means in practice, and what genuinely is automated.

Auto-Crosslisting Rules

You can set rules that push new Bidzzy inventory to Whatnot automatically as you add it — filtered by category, price range or brand — so you’re not manually selecting the same items twice every time you list something new.

Bulk Operations

Select your whole Bidzzy catalogue, or a filtered slice of it, and crosslist to Whatnot in one action rather than product by product. The same bulk tooling handles mark-as-sold across both channels when you need to clear stock manually.

What’s genuinely not here yet

Auto-relisting (automatically refreshing an expired or delisted item) and FLUF-managed offer sending aren’t available on either Bidzzy or Whatnot inside FLUF Connect at the moment — both are newer, more constrained integrations than channels like eBay or Vinted, where FLUF has deeper API access. If those matter more to your workflow than the crosslisting and one-way sync described above, they’re worth knowing about before you build a process around this specific pair.

How Much Does It Cost to Crosslist from Bidzzy to Whatnot?

Neither marketplace charges you to sell — Bidzzy has no seller fees at all, and Whatnot’s fees (6.67% + VAT commission, 2.42% + VAT processing, £0.25 + VAT per order in the UK) are what Whatnot itself charges on a sale, not anything FLUF adds. FLUF Connect starts with a 7-day trial for £1, then plans from £9/month (Starter, 300 products). There is no free plan. Crosslisting, sold-elsewhere sync and bulk operations are included on every plan rather than sold as add-ons.

Every plan covers crosslisting between all supported channels, not just this pair. Add Vinted, Depop, eBay or Shopify at no extra cost.

See full pricing details →

Sources & Verification

Bidzzy publishes almost no independently verifiable data, so figures here are either quoted directly from its own terms and help pages, or measured directly from its public listings on the date stated. Whatnot figures come from its own newsroom and help centre. Last verified: 17 August 2026.

• Bidzzy Terms of Service (v8.1, effective 3 August 2026) — zero seller fees, the 5% + £0.80 Buyer Protection fee with its £1.00 minimum and £15.00 cap, the offers floor at 50% of asking price.
• Bidzzy FAQ — mainland-UK-only coverage, prohibited items, dispute window.
• Bidzzy private seller guide — minimum three original photos, photo authenticity rules, 72-hour payout hold.
• Companies House, BIDZZY LTD (17259377) — incorporation date 3 June 2026.
• Whatnot newsroom — 2026 State of Live Selling Report — $8bn+ 2025 GMV, 6.4M sports cards sold/month, 12M+ women’s-fashion orders/month, category growth figures.
• Whatnot newsroom — Continuing to Grow, Together — $225M Series F at an $11.5bn valuation, October 2025.
• Whatnot Help Centre — Whatnot Tax guide (UK) — UK rate card: 6.67% + VAT commission, 2.42% + VAT processing, £0.25 + VAT transaction fee.
• Whatnot Help Centre — Whatnot seller fees — US fee card, referenced for comparison.
• Crosslist from Vinted to Bidzzy — another Bidzzy pair page

Figures we deliberately don’t quote: Bidzzy has no Trustpilot profile, no published user count and no press-verified GMV figure. Any article citing a Bidzzy sales volume has invented it.

Related pages: Sell on Bidzzy · Sell on Whatnot · Vinted to Bidzzy · Depop to Whatnot · Etsy to Whatnot · All channel guides · Crosslisting hub · Crosslist Bidzzy to Depop · Bidzzy vs Vinted compared

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